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近年来的新资料表明,铝的碳酸盐矿物——丝钠铝石,是一种分布广、储量大、未来有前景的铝工业原料.美国科罗拉多州皮恰恩斯河盆地的丝钠铝石总储量约245亿吨(合85亿吨氧化铝),是世界上规模最大的丝钠铝石矿体.该矿体产于由含石油的沥青、泥灰岩和页岩互层组成的始新世层系中.岩层内夹火山灰和天然碱(Na_2CO_3·NaHCO_3·2H_2O).丝钠铝石呈浸染状、透镜状和断续的脉状、均匀散布的晶体及其集合体产出.含矿层厚91m,面积41400km~2,丝钠铝石平均含量12.3%,最高达25%,与重碳酸盐层共生,并伴生少量三水铝石.对从该区提取丝钠铝石、重碳酸盐、天然碱和地沥青进行了研究.苏联喀尔巴阡和顿巴斯的丝钠铝石赋存于汞矿矿化区.白俄罗斯的丝钠铝石产于下石炭统土尔聂依组铝土矿层中.富含丝钠铝石的样品,含(%)Al_2O_3-31,SiO_2
In recent years, new data show that the aluminum carbonate mineral - silica, is a widely distributed, large reserves, the future prospects of the aluminum industrial raw materials. United States Colorado Pisan River basin wire sodium aluminum With a total reserves of about 24.5 billion tons (8.5 billion tons of alumina), it is the largest sodalite ore body in the world and consists of interbedded layers of petroleum-containing bitumen, marl and shale In the Eocene strata, volcanic ash and trona (Na_2CO_3 · NaHCO_3 · 2H_2O) are trapped in the strata, and disseminated, lenticular and discontinuous vein-like and uniformly distributed crystals and their assemblages are produced by the tetrasil. The ore-bearing layer is 91m thick and covers an area of 41400km ~ 2 with the average content of 12.3% and up to 25%, which is symbiotic with the bicarbonate layer with a small amount of gibbsite. Bicarbonate, trona, and bitumen were studied in the Carpathians and Donbass in the Soviet Union, boehmitzite occurs in the mercury mineralization zone.Belarusian sodium silicalite produced in the Lower Carboniferous Tuer In the Nieyi bauxite layer, the samples containing abundant witherite (%) Al 2 O 3 - 31 and SiO 2